EntityManagerProducer.java

package uk.me.kissy.sales.producers;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.context.RequestScoped;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.Disposes;
import javax.enterprise.inject.Produces;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceUnit;

@ApplicationScoped
public class EntityManagerProducer {
	
	@PersistenceUnit(unitName = "sales")
	private EntityManagerFactory entityManagerFactory;

	@Produces
	@Default
	@RequestScoped
	public EntityManager create() {
		return this.entityManagerFactory.createEntityManager();
	}

	public void dispose(@Disposes @Default EntityManager entityManager) {
		if (entityManager.isOpen()) {
			entityManager.close();
		}
	}
}